Well as most Athlon 64 users know, 1T setting improves performance quite significantly over 2T, but it is also very taxing on the memory and quite a hit-and-miss when matching different memory with different boards. From some users’ feedback, the Asus A8N SLI can be a little picky with 1T setting when overclocking, so results might be a little better with other boards.

As seen from the graph, this setting can only be achieved when voltage supplied is 3.1v and above. That is the point 1T setting starts to work with this board. We see a jump in clockability when the memory voltage switches from 3.4v to 3.5v.

And finally, for the ultimate performance setting, we tried 1T with Cas 2.0, 2, 5, 2.